NREL Confirms 14.4 Percent Efficiency of First Solar´s Cadmium Telluride Modules
New Efficiency Record for CdTe Modules
First Solar has set a new world record for cadmium telluride (CdTe) photovoltaic (PV) solar module efficiency, achieving 14.4 percent total area efficiency. The U.S. Department of Energy’s National Renewable Energy Lab (NREL) confirmed the record, which eclipsed the prior mark of 13.4 percent.
Picture: First Solar
The record performance, announced in January at the World Future Energy Summit in Abu Dhabi by First Solar’s Chief Technology Officer Dave Eaglesham, comes just six months after First Solar leapfrogged the world record for CdTe solar cell efficiency with a mark of 17.3 percent. Both the cell and module record-setters were constructed using commercial-scale manufacturing equipment and materials at the Company’s Perrysburg, Ohio factory. Cell efficiency measures the proportion of light converted to energy in a single solar cell, whereas total area module efficiency measures light conversion across a production-size, multi-cell solar module, providing a more realistic assessment of real-world performance than cell or aperture-area efficiency.
“This considerable achievement supports our module efficiency roadmap and demonstrates our ability to convert our record-cell technology into ongoing module-level improvements,” said Dave Eaglesham. “These records also underscore the tremendous ongoing potential of CdTe compared to silicon-based technologies.”
First Solar updated its module efficiency roadmap in December 2011 to the increased goal of 14.5–15 percent average efficiency for its production modules by the end of 2015, and the process improvements developed for the record-setting cell and module continue to be implemented as part of that roadmap. The average efficiency of First Solar modules increased from 11.4 percent in 2010 to 11.7 percent in 2011 and is expected to reach 12.7 percent in the fourth quarter of 2012.
First Solar, which has manufactured more than 5 GW of its advanced thin-film modules, utilizes a continuous manufacturing process which transforms a sheet of glass into a complete solar module in less than 2.5 hours, which contributes to the company’s industry-leading energy payback time and the low carbon footprint of systems using First Solar PV modules. First Solar also implemented a solar module collection and recycling program.